diff --git a/broadcast/favicon.ico b/broadcast/favicon.ico
new file mode 100644
index 0000000..64f57c4
Binary files /dev/null and b/broadcast/favicon.ico differ
diff --git a/broadcast/index.frm.php b/broadcast/index.frm.php
index bc0ebe3..3a6b53f 100644
--- a/broadcast/index.frm.php
+++ b/broadcast/index.frm.php
@@ -53,9 +53,11 @@
                                     </div>
 
                                     <div class="col input-group">
-                                        <input type="text" class="form-control" placeholder="YYYY/MM/DD" id="filter-date-start" />
+                                        <input type="text" class="form-control" placeholder="YYYY-MM-DD" id="filter-date-start"
+                                               value="<?= $date_start ?>" />
                                         <span class="input-group-text">〜</span>
-                                        <input type="text" class="form-control" placeholder="YYYY/MM/DD" id="filter-date-end" />
+                                        <input type="text" class="form-control" placeholder="YYYY-MM-DD" id="filter-date-end"
+                                               value="<?= $date_end ?>" />
                                     </div>
                                 </div>
 
diff --git a/broadcast/index.php b/broadcast/index.php
index 12773e8..2e69fab 100644
--- a/broadcast/index.php
+++ b/broadcast/index.php
@@ -12,6 +12,9 @@ $length = (int) ($_GET['max'] ?? 20);
 $asc = ($_GET['asc'] ?? 0) != 0;
 $keyword = trim ($_GET['q'] ?? '');
 
+$date_start = $_GET['start'] ?: null;
+$date_end = $_GET['end'] ?: null;
+
 $f = fopen (LOG_PATH, 'r');
 
 if ($f !== false)
@@ -40,6 +43,18 @@ if ($keyword != '')
         !== false));
   }
 
+if ($date_start)
+  {
+    $log_data = array_filter ($log_data, fn ($row) => (
+        substr ($row['date_time'], 0, 10) >= $date_start));
+  }
+
+if ($date_end)
+  {
+    $log_data = array_filter ($log_data, fn ($row) => (
+        substr ($row['date_time'], 0, 10) <= $date_end));
+  }
+
 $pages_max = (int) ((count ($log_data) - 1) / $length) + 1;
 
 if (!($asc))
diff --git a/broadcast/script.js b/broadcast/script.js
index 447cf8e..101b14d 100644
--- a/broadcast/script.js
+++ b/broadcast/script.js
@@ -4,8 +4,11 @@ Script
   static
   main ()
   {
-    $ ('#filter-date-start').datepicker ();
-    $ ('#filter-date-end').datepicker ();
+    const dateOptions = {dateFormat:  'yy-mm-dd',
+                         firstDay:    6};
+
+    $ ('#filter-date-start').datepicker (dateOptions);
+    $ ('#filter-date-end').datepicker (dateOptions);
 
     const url = new URL (window.location.href);
 
@@ -17,6 +20,14 @@ Script
     const filter = (
         function (e)
         {
+          let dateStart = $ ('#filter-date-start').val ();
+          let dateEnd = $ ('#filter-date-end').val ();
+
+          if ((dateStart !== '')
+              && (dateEnd !== '')
+              && (dateStart > dateEnd))
+            [dateStart, dateEnd] = [dateEnd, dateStart];
+
           url.searchParams.delete ('p');
 
           url.searchParams.delete ('asc');
@@ -25,6 +36,15 @@ Script
           url.searchParams.delete ('q');
           url.searchParams.append ('q', filterKeyword.value);
 
+          url.searchParams.delete ('start');
+          url.searchParams.delete ('end');
+
+          if (dateStart !== '')
+            url.searchParams.append ('start', dateStart);
+
+          if (dateEnd !== '')
+            url.searchParams.append ('end', dateEnd);
+
           window.location.href = url;
         });